Nonexplosive stop

In phonetics and phonology, nonexplosive stops are posited class of non-pulmonic stop consonants that lack the pressure build-up and burst release associated with pulmonic stops, but also the laryngeal lowering of implosive stops. They are reported to occur in Ikwere, an Igboid language of Nigeria.
Ikwere's two nonexplosive stops, transcribed as voiced and pre-glottalized, correspond to labial-velars and, respectively, in most other Igboid languages, and to implosives and in some varieties of Igbo. Ikwere's stops resemble both, in that they are velarized and have a non-pulmonic airstream mechanism.